Mercurial > libervia-backend

annotate sat/plugins/plugin_xep_0300.py @ 3237:b0c57c9a4bd8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
plugin XEP-0384: OMEMO trust policy: OMEMO trust policy can now be specified. For now there are 2 policies: - `manual`: each new device fingerprint must be explicitly trusted or not before the device can be used, and the message sent - `BTBV` (Blind Trust Before Verification): each new device fingerprint is automically trusted, until user manually trust or not a device, in which case the behaviour becomes the same as for `manual` for the entity. When using the Trust UI, user can put the entity back to blind trust if they wish. A message is send as feedback to user when a new device is/must be trusted, trying to explain clearly what's happening to the user. Devices which have been automically trusted are marked, so user can know which ones may cause security issue.
author Goffi <goffi@goffi.org>
date Fri, 27 Mar 2020 10:02:14 +0100
parents 559a625a236b
children ddf3ded93b78
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
1 #!/usr/bin/env python3
3137
559a625a236b fixed shebangs
Goffi <goffi@goffi.org>
parents: 3136
diff changeset
2
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
3
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
4 # SAT plugin for Hash functions (XEP-0300)
3136
9d0df638c8b4 dates update
Goffi <goffi@goffi.org>
parents: 3040
diff changeset
5 # Copyright (C) 2009-2020 Jérôme Poisson (goffi@goffi.org)
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
6
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
7 # This program is free software: you can redistribute it and/or modify
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
8 # it under the terms of the GNU Affero General Public License as published by
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
9 # the Free Software Foundation, either version 3 of the License, or
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
10 # (at your option) any later version.
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
11
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
12 # This program is distributed in the hope that it will be useful,
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
15 # GNU Affero General Public License for more details.
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
16
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
17 # You should have received a copy of the GNU Affero General Public License
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
19
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
20 from sat.core.i18n import _
2145
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
21 from sat.core.constants import Const as C
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
22 from sat.core.log import getLogger
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
23
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
24 log = getLogger(__name__)
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
25 from sat.core import exceptions
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
26 from twisted.words.xish import domish
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
27 from twisted.words.protocols.jabber.xmlstream import XMPPHandler
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
28 from twisted.internet import threads
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
29 from twisted.internet import defer
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
30 from zope.interface import implementer
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
31 from wokkel import disco, iwokkel
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
32 from collections import OrderedDict
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
33 import hashlib
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
34 import base64
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
35
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
36
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
37 PLUGIN_INFO = {
2145
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
38 C.PI_NAME: "Cryptographic Hash Functions",
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
39 C.PI_IMPORT_NAME: "XEP-0300",
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
40 C.PI_TYPE: "XEP",
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
41 C.PI_MODES: C.PLUG_MODE_BOTH,
2145
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
42 C.PI_PROTOCOLS: ["XEP-0300"],
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
43 C.PI_MAIN: "XEP_0300",
33c8c4973743 core (plugins): added missing contants + use of new constants in PLUGIN_INFO
Goffi <goffi@goffi.org>
parents: 2144
diff changeset
44 C.PI_HANDLER: "yes",
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
45 C.PI_DESCRIPTION: _("""Management of cryptographic hashes"""),
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
46 }
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
47
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
48 NS_HASHES = "urn:xmpp:hashes:2"
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
49 NS_HASHES_FUNCTIONS = "urn:xmpp:hash-function-text-names:{}"
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
50 BUFFER_SIZE = 2 ** 12
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
51 ALGO_DEFAULT = "sha-256"
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
52
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
53
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
54 class XEP_0300(object):
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
55 # TODO: add blake after moving to Python 3
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
56 ALGOS = OrderedDict(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
57 (
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
58 ("md5", hashlib.md5),
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
59 ("sha-1", hashlib.sha1),
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
60 ("sha-256", hashlib.sha256),
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
61 ("sha-512", hashlib.sha512),
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
62 )
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
63 )
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
64
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
65 def __init__(self, host):
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
66 log.info(_("plugin Hashes initialization"))
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
67 host.registerNamespace("hashes", NS_HASHES)
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
68
2144
1d3f73e065e1 core, jp: component handling + client handling refactoring:
Goffi <goffi@goffi.org>
parents: 1934
diff changeset
69 def getHandler(self, client):
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
70 return XEP_0300_handler()
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
71
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
72 def getHasher(self, algo=ALGO_DEFAULT):
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
73 """Return hasher instance
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
74
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
75 @param algo(unicode): one of the XEP_300.ALGOS keys
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
76 @return (hash object): same object s in hashlib.
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
77 update method need to be called for each chunh
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
78 diget or hexdigest can be used at the end
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
79 """
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
80 return self.ALGOS[algo]()
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
81
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
82 def getDefaultAlgo(self):
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
83 return ALGO_DEFAULT
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
84
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
85 @defer.inlineCallbacks
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
86 def getBestPeerAlgo(self, to_jid, profile):
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
87 """Return the best available hashing algorith of other peer
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
88
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
89 @param to_jid(jid.JID): peer jid
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
90 @parm profile: %(doc_profile)s
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
91 @return (D(unicode, None)): best available algorithm,
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
92 or None if hashing is not possible
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
93 """
2148
a543eda2c923 core (memory/disco): getInfos now handle node + use client instead of profile in many methods
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
94 client = self.host.getClient(profile)
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
95 for algo in reversed(XEP_0300.ALGOS):
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
96 has_feature = yield self.host.hasFeature(
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
97 client, NS_HASHES_FUNCTIONS.format(algo), to_jid
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
98 )
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
99 if has_feature:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
100 log.debug(
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
101 "Best hashing algorithm found for {jid}: {algo}".format(
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
102 jid=to_jid.full(), algo=algo
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
103 )
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
104 )
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
105 defer.returnValue(algo)
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
106
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
107 def _calculateHashBlocking(self, file_obj, hasher):
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
108 """Calculate hash in a blocking way
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
109
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
110 /!\\ blocking method, please use calculateHash instead
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
111 @param file_obj(file): a file-like object
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
112 @param hasher(callable): the method to call to initialise hash object
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
113 @return (str): the hex digest of the hash
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
114 """
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
115 hash_ = hasher()
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
116 while True:
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
117 buf = file_obj.read(BUFFER_SIZE)
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
118 if not buf:
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
119 break
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
120 hash_.update(buf)
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
121 return hash_.hexdigest()
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
122
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
123 def calculateHash(self, file_obj, hasher):
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
124 return threads.deferToThread(self._calculateHashBlocking, file_obj, hasher)
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
125
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
126 def calculateHashElt(self, file_obj=None, algo=ALGO_DEFAULT):
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
127 """Compute hash and build hash element
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
128
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
129 @param file_obj(file, None): file-like object to use to calculate the hash
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
130 @param algo(unicode): algorithme to use, must be a key of XEP_0300.ALGOS
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
131 @return (D(domish.Element)): hash element
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
132 """
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
133
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
134 def hashCalculated(hash_):
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
135 return self.buildHashElt(hash_, algo)
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
136
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
137 hasher = self.ALGOS[algo]
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
138 hash_d = self.calculateHash(file_obj, hasher)
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
139 hash_d.addCallback(hashCalculated)
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
140 return hash_d
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
141
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
142 def buildHashUsedElt(self, algo=ALGO_DEFAULT):
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
143 hash_used_elt = domish.Element((NS_HASHES, "hash-used"))
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
144 hash_used_elt["algo"] = algo
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
145 return hash_used_elt
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
146
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
147 def parseHashUsedElt(self, parent):
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
148 """Find and parse a hash-used element
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
149
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
150 @param (domish.Element): parent of <hash/> element
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
151 @return (unicode): hash algorithm used
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
152 @raise exceptions.NotFound: the element is not present
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
153 @raise exceptions.DataError: the element is invalid
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
154 """
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
155 try:
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
156 hash_used_elt = next(parent.elements(NS_HASHES, "hash-used"))
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
157 except StopIteration:
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
158 raise exceptions.NotFound
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
159 algo = hash_used_elt["algo"]
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
160 if not algo:
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
161 raise exceptions.DataError
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
162 return algo
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
163
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
164 def buildHashElt(self, hash_, algo=ALGO_DEFAULT):
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
165 """Compute hash and build hash element
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
166
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
167 @param hash_(str): hash to use
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
168 @param algo(unicode): algorithme to use, must be a key of XEP_0300.ALGOS
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
169 @return (domish.Element): computed hash
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
170 """
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
171 assert hash_
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
172 assert algo
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
173 hash_elt = domish.Element((NS_HASHES, "hash"))
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
174 if hash_ is not None:
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
175 b64_hash = base64.b64encode(hash_.encode('utf-8')).decode('utf-8')
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
176 hash_elt.addContent(b64_hash)
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
177 hash_elt["algo"] = algo
1526
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
178 return hash_elt
bb451fd1cea3 plugin XEP-0300: hashes management first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
179
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
180 def parseHashElt(self, parent):
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
181 """Find and parse a hash element
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
182
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
183 if multiple elements are found, the strongest managed one is returned
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
184 @param (domish.Element): parent of <hash/> element
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
185 @return (tuple[str, bytes]): (algo, hash) tuple
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
186 both values can be None if <hash/> is empty
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
187 @raise exceptions.NotFound: the element is not present
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
188 @raise exceptions.DataError: the element is invalid
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
189 """
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
190 algos = list(XEP_0300.ALGOS.keys())
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
191 hash_elt = None
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
192 best_algo = None
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
193 best_value = None
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
194 for hash_elt in parent.elements(NS_HASHES, "hash"):
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
195 algo = hash_elt.getAttribute("algo")
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
196 try:
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
197 idx = algos.index(algo)
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
198 except ValueError:
3040
fee60f17ebac jp: jp asyncio port:
Goffi <goffi@goffi.org>
parents: 3028
diff changeset
199 log.warning(f"Proposed {algo} algorithm is not managed")
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
200 algo = None
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
201 continue
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
202
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
203 if best_algo is None or algos.index(best_algo) < idx:
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
204 best_algo = algo
3040
fee60f17ebac jp: jp asyncio port:
Goffi <goffi@goffi.org>
parents: 3028
diff changeset
205 best_value = base64.b64decode(str(hash_elt)).decode('utf-8')
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
206
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
207 if not hash_elt:
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
208 raise exceptions.NotFound
2502
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
209 if not best_algo or not best_value:
7ad5f2c4e34a XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
Goffi <goffi@goffi.org>
parents: 2483
diff changeset
210 raise exceptions.DataError
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
211 return best_algo, best_value
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
212
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
213
3028
ab2696e34d29 Python 3 port:
Goffi <goffi@goffi.org>
parents: 2771
diff changeset
214 @implementer(iwokkel.IDisco)
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
215 class XEP_0300_handler(XMPPHandler):
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
216
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
217 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
218 hash_functions_names = [
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
219 disco.DiscoFeature(NS_HASHES_FUNCTIONS.format(algo))
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
220 for algo in XEP_0300.ALGOS
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
221 ]
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
222 return [disco.DiscoFeature(NS_HASHES)] + hash_functions_names
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
223
2624
56f94936df1e code style reformatting using black
Goffi <goffi@goffi.org>
parents: 2562
diff changeset
224 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
1618
0de5f210fe56 plugin XEP-0300: implemented hashing:
Goffi <goffi@goffi.org>
parents: 1526
diff changeset
225 return []